04. Orders

import java.util.*;

public class AssArrays {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        Map<String, Double> map = new LinkedHashMap<>();

        Map<String, Double> testQuantity = new LinkedHashMap<>();

        String input = scanner.nextLine();

        while(!input.equals("buy")){

            String [] tokens =  input.split(" ");
            String productName = tokens[0];
            Double price = Double.parseDouble(tokens[1]);
            Double quantity = Double.parseDouble(tokens[2]);
            Double sum = price*quantity;


            if(!map.containsKey(productName)){
                map.put(productName,sum);
            }
            else{
                double sumQauntity = testQuantity.get(productName) + quantity;

                    sum = sumQauntity * price;
                    map.put(productName,sum);

            }


            Double currentQuantity = quantity;
            testQuantity.put(productName,currentQuantity);


              input = scanner.nextLine();
        }
        map
                .forEach((key,value) -> System.out.printf("%s -> %.2f%n",key,value));



    }

}